I feel so bad after taking Fulvestrant.

Fulvestrant is a drug used to treat breast cancer. Although it can effectively control the growth of breast cancer cells, some patients may experience adverse reactions after using it. Common adverse reactions include pain, swelling, and redness at the injection site, nausea, vomiting, diarrhea, headache, fatigue, etc. If the patient develops symptoms after using fulvestrant, it is recommended to consult a doctor or pharmacist in time for appropriate treatment. Some mild symptoms may gradually subside, but if symptoms persist or worsen, you need to seek medical attention promptly. Depending on the severity and duration of symptoms, your doctor may adjust the dosage or change the medication to reduce discomfort.